eSign (e签宝) MCP Server for Vercel AI SDK 10 tools — connect in under 2 minutes
The Vercel AI SDK is the TypeScript toolkit for building AI-powered applications. Connect eSign (e签宝) through Vinkius and every tool is available as a typed function. ready for React Server Components, API routes, or any Node.js backend.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import { createMCPClient } from "@ai-sdk/mcp";
import { generateText } from "ai";
import { openai } from "@ai-sdk/openai";
async function main() {
const mcpClient = await createMCPClient({
transport: {
type: "http",
// Your Vinkius token. get it at cloud.vinkius.com
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
});
try {
const tools = await mcpClient.tools();
const { text } = await generateText({
model: openai("gpt-4o"),
tools,
prompt: "Using eSign (e签宝), list all available capabilities.",
});
console.log(text);
} finally {
await mcpClient.close();
}
}
main();
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About eSign (e签宝) MCP Server
Empower your AI agent to orchestrate your digital agreement lifecycle with eSign (e签宝), the premier electronic signature platform in China. By connecting eSign to your agent, you transform complex contract workflows and document signing into a natural conversation. Your agent can instantly list your sign flows, create new signature tasks, manage document templates, and even retrieve signing URLs for participants without you ever needing to navigate the comprehensive eSign portal. Whether you are managing high-volume employee contracts or complex B2B agreements, your agent acts as a real-time legal operations assistant, keeping your documents secure and your business moving.
The Vercel AI SDK gives every eSign (e签宝) tool full TypeScript type inference, IDE autocomplete, and compile-time error checking. Connect 10 tools through Vinkius and stream results progressively to React, Svelte, or Vue components. works on Edge Functions, Cloudflare Workers, and any Node.js runtime.
What you can do
- Sign Flow Orchestration — Create and manage digital signature workflows with full support for documents and signers.
- Template Management — Browse predefined document templates to accelerate your contract production.
- Signature Tracking — Monitor the real-time status of active sign flows and retrieve execution URLs for participants.
- Document Control — Add PDF documents to signature tasks and retrieve download links for completed agreements.
- Organization Insights — Retrieve high-level information about your enterprise eSign account and authorization status.
The eSign (e签宝) MCP Server exposes 10 tools through the Vinkius. Connect it to Vercel AI SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect eSign (e签宝) to Vercel AI SDK via MCP
Follow these steps to integrate the eSign (e签宝) MCP Server with Vercel AI SDK.
Install dependencies
Run npm install @ai-sdk/mcp ai @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the script
Save to agent.ts and run with npx tsx agent.ts
Explore tools
The SDK discovers 10 tools from eSign (e签宝) and passes them to the LLM
Why Use Vercel AI SDK with the eSign (e签宝) MCP Server
Vercel AI SDK provides unique advantages when paired with eSign (e签宝) through the Model Context Protocol.
TypeScript-first: every MCP tool gets full type inference, IDE autocomplete, and compile-time error checking out of the box
Framework-agnostic core works with Next.js, Nuxt, SvelteKit, or any Node.js runtime. same eSign (e签宝) integration everywhere
Built-in streaming UI primitives let you display eSign (e签宝) tool results progressively in React, Svelte, or Vue components
Edge-compatible: the AI SDK runs on Vercel Edge Functions, Cloudflare Workers, and other edge runtimes for minimal latency
eSign (e签宝) + Vercel AI SDK Use Cases
Practical scenarios where Vercel AI SDK combined with the eSign (e签宝) MCP Server delivers measurable value.
AI-powered web apps: build dashboards that query eSign (e签宝) in real-time and stream results to the UI with zero loading states
API backends: create serverless endpoints that orchestrate eSign (e签宝) tools and return structured JSON responses to any frontend
Chatbots with tool use: embed eSign (e签宝) capabilities into conversational interfaces with streaming responses and tool call visibility
Internal tools: build admin panels where team members interact with eSign (e签宝) through natural language queries
eSign (e签宝) MCP Tools for Vercel AI SDK (10)
These 10 tools become available when you connect eSign (e签宝) to Vercel AI SDK via MCP:
add_docs
Add documents to flow
add_signers
Add signers to flow
create_sign_flow
Create a new sign flow
download_docs
Download flow documents
get_execute_url
Get signature URL
get_org_info
Get organization details
get_sign_flow
Get sign flow details
list_sign_flows
List sign flows
list_templates
List sign templates
start_flow
Start sign flow
Example Prompts for eSign (e签宝) in Vercel AI SDK
Ready-to-use prompts you can give your Vercel AI SDK agent to start working with eSign (e签宝) immediately.
"List all active signature flows on eSign."
"Get the signing URL for account 'acc-8821' in flow 'flow-9920'."
"Show me all available document templates."
Troubleshooting eSign (e签宝) MCP Server with Vercel AI SDK
Common issues when connecting eSign (e签宝) to Vercel AI SDK through the Vinkius, and how to resolve them.
createMCPClient is not a function
npm install @ai-sdk/mcpeSign (e签宝) + Vercel AI SDK FAQ
Common questions about integrating eSign (e签宝) MCP Server with Vercel AI SDK.
How does the Vercel AI SDK connect to MCP servers?
createMCPClient from @ai-sdk/mcp and pass the server URL. The SDK discovers all tools and provides typed TypeScript interfaces for each one.Can I use MCP tools in Edge Functions?
Does it support streaming tool results?
useChat and streamText that handle tool calls and display results progressively in the UI.Connect eSign (e签宝) with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect eSign (e签宝) to Vercel AI SDK
Get your token, paste the configuration, and start using 10 tools in under 2 minutes. No API key management needed.